Problem

Occasionally, when working with content pages and doing advanced functions such as changing content types, or un=installing modules that provide content types that are in use, it is possible to notice some bad ordering in your content list. i.e: Two or more pages with the same hierarchy level. This is easy to solve.

Solution

Go to Content >> Pages, and click on the "Reorder Pages" link.

This will display a page that will allow you to organize pages by dragging and dropping pages to their desired locations. Select any page, and move it to a new location. Then click "Submit"

This will re-order all pages to the new layout, and should correct the duplicated hierarchy position issue. It will return you to the content list.

Next repeat the process above, but return the page you moved earlier to its correct location.